CVE-2021-39559

5.5 MEDIUM

An issue was discovered in swftools through 20200710

Published: 2021-09-20 · Last updated: 2026-06-17

Severity and scoring

CVSS: 5.5 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE: CWE-476

Affected products

Vendor	Product
swftools	swftools

Description

An issue was discovered in swftools through 20200710. A NULL pointer dereference exists in the function GString::~GString() located in GString.cc. It allows an attacker to cause Denial of Service.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-39559
[Exploit reference]https://github.com/matthiaskramm/swftools/issues/101
[Exploit reference]https://github.com/matthiaskramm/swftools/issues/101

Related CVEs

Same vendor

CVE-2021-39598 — An issue was discovered in swftools through 20200710 (5.5 MEDIUM)
CVE-2021-39597 — An issue was discovered in swftools through 20200710 (5.5 MEDIUM)
CVE-2021-39596 — An issue was discovered in swftools through 20200710 (5.5 MEDIUM)
CVE-2021-39595 — An issue was discovered in swftools through 20200710 (7.8 HIGH)
CVE-2021-39594 — Other An issue was discovered in swftools through 20200710 (5.5 MEDIUM)

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